Hi @Egor, welcome to our forum. The restarting Experia Box is an odd result of connecting the thermostat. You said you've reserved an IP for it, and that it does this since then. What happens if you don't reserve an IP? Does the Box 12 still restart then? Or does the thermostat not work at all in that case?

No, the issue started since the very begining of thermostat usage. So whenever thermostat is connected to experiabox with or without recommended settings, it cause restarts.

I found a workaround:

1. i created a guest 5G network in experiabox settings
2. i connected thermostat to that guest network exclusively, while other devices are connected to the main one

So far no issues and no restarts for 10+ hrs;

I see in the network stats that only in that guest network there are disrupted packets. 

Egor

That sounds good Egor, I hope it stays working like this. If there is anything else we can do for you, don't hesitate to ask.